Compatible clamp diameter: 31.8mm only (no shim included/cannot be used) Base material: 6061 T6 aluminum Expansion parts: gp-k400a Other light and camera adapters are sold separately Accessories: Mount body only *No items other than accessories are included. Country of origin: Japan Compatible models/mega gps XL (mega gps xl) /mega c gps (mega c gps) / super gps (super gps)/micro c gps (micro c gps)/micro gps (micro gps)/macro gps (macro gps)/mini gps (mini gps)/x-lock compatible Compatible with GPS cycle computers that fit o-ring mount or forward mount

Manufacturer product details page (subject to change) https://www.rec-mounts.com/products/lezyne/ Please see the support page for the latest compatibility information for installed equipment. https://www.rec-mounts.com/support/ For expansion, please see the compatibility table (PDF) by mount and Expansion Basics. Expansion Basics http://rec-mounts.net/date/oder2.pdf Compatibility table by mount (all brands) http://rec-mounts.net/date/cytype.pdf Compatibility table by mount (lezyne) http://rec-mounts.net/date/gk.LEZ.pdf Compatibility table by part Compatibility table (lower adapter, Di2 junction adapter, etc.) http://rec-mounts.net/date/cytype2.pdf *The data is updated, so please press the update button every time you view it (F5) Specifications are subject to change without notice. Therefore, the compatibility of expansion parts may also change. The mount recommended by RecMount is the double-sided narrow type. If you cannot install the double-end narrow type, please check the bolt clamp type or special handle/stem exclusive product. Reasons why narrow is recommended http://rec-mounts.net/date/osusume2.pdf